ILTS Computer Science (205) study guide
ILTS Computer Science (205) · Work through your exam, one topic at a time.
The ILTS Computer Science (205) is a content-area licensure test used in Illinois for candidates seeking an endorsement to teach computer science in the state's public schools. It is intended for aspiring and practicing educators who need to demonstrate subject-matter competence, not for general technology certification. The ILTS Computer Science (205) study guide has 6 sections and about 1,909 words.
01Computer Science Fundamentals and Algorithms
Domain 1 tests how well you can reason about computation: number representation, Boolean logic, algorithm design, and complexity. Questions often ask you to trace code or compare strategies rather than recite definitions.
328 words, about 2 min02Programming and Software Development
Domain 2 covers program construction and the software lifecycle: syntax and semantics, control flow, modular design, object-oriented concepts, testing, and collaborative maintenance. Expect questions that ask what a fragment does, why a test fails, or which design choice limits change.
329 words, about 2 min03Data Structures and Databases
Domain 3 tests selection and implementation of data structures plus relational database design and querying. Expect complexity comparisons, trace questions, and SQL interpretation.
327 words, about 2 min04Computer Systems, Networks, and Security
Domain 4 covers how hardware and operating systems execute programs, how networks move data, and how security controls protect assets. Questions connect layers and ask you to reason from a scenario.
319 words, about 2 min05Impacts of Computing, Ethics, and Professional Practice
Domain 5 examines computing's social consequences and the professional judgments teachers and developers make. It tests ethical reasoning, privacy, equity, accessibility, intellectual property, and responsible use of data.
298 words, about 1 min06Computer Science Instruction and Assessment
Domain 6 tests pedagogical content knowledge: planning CS instruction, eliciting misconceptions, designing assessments, and using results to adapt teaching. It is not a general classroom-management domain; answers should connect to how computing is learned.
308 words, about 2 min